Introduction
Materials and methods
Tested materials
Trade name | Manufacturer | Dimension (inch) |
---|---|---|
Gummetal® | Maruemu Works Co, Osaka, Japan/ Rocky Mountain Morita Corporation, Tokyo, Japan | 0.014, 0.016, 0.016 × 0.022, 0.019 × 0.025 |
Elgiloy® | Rocky Mountain Orthodontics, Denver, CO, USA, distributed by Dentalline Orthodontic Products, Birkenfeld, Germany | 0.014, 0.016, 0.016 × 0.022, 0.019 × 0.025 |
TMA® | Ormco Corp., Orange, CA, USA | 0.016, 0.016 × 0.022, 0.019 × 0.025 |
NiTi-SE | Dentalline Orthodontic Products, Birkenfeld, Germany | 0.014, 0.016, 0.016 × 0.022, 0.019 × 0.025 |
Stainless steel (Ref. 251–925) | 3M Unitek, Monrovia, CA, USA | 0.014, 0.016, 0.016 × 0.022, 0.019 × 0.025 |
Trade name | Manufacturer | Material | Slot size (inch) |
---|---|---|---|
Discovery® | Dentaurum, Ispringen, Germany | Metal | 0.018 0.022 |
Micro Sprint® | Forestadent, Pforzheim, Germany | Metal | 0.018 0.022 |
Clarity™ | 3M Unitek, Monrovia, CA, USA | Ceramic with metal slot | 0.018 0.022 |
Inspire Ice™ | Ormco Corp., Orange, CA, USA | Ceramic | 0.018 0.022 |
Simulation system
Measurements
Group | N | MD | M | SD | Min | Max |
---|---|---|---|---|---|---|
Clarity™ | ||||||
Clarity™ 18, β‑Ti 16 | 5 | 1.819 | 1.894 | 0.160 | 1.763 | 2.138 |
Clarity™ 18, β‑Ti 16 × 22 | 5 | 1.565 | 1.539 | 0.206 | 1.338 | 1.852 |
Clarity™ 18, CoCr 14 | 5 | 0.903 | 0.833 | 0.212 | 0.464 | 0.979 |
Clarity™ 18, CoCr 16 | 5 | 0.887 | 0.819 | 0.182 | 0.560 | 0.995 |
Clarity™ 18, CoCr 16 × 22 | 5 | 0.897 | 0.843 | 0.147 | 0.588 | 0.955 |
Clarity™ 18, Gummetal® 14 | 5 | 0.698 | 0.679 | 0.089 | 0.533 | 0.775 |
Clarity™ 18, Gummetal® 16 | 5 | 0.856 | 0.809 | 0.163 | 0.618 | 1.012 |
Clarity™ 18, Gummetal® 16 × 22 | 5 | 1.079 | 1.043 | 0.135 | 0.841 | 1.210 |
Clarity™ 18, NiTi 14 | 5 | 1.043 | 1.025 | 0.145 | 0.798 | 1.164 |
Clarity™ 18, NiTi 16 | 5 | 0.977 | 1.038 | 0.141 | 0.910 | 1.246 |
Clarity™ 18, NiTi 16 × 22 | 5 | 0.827 | 0.817 | 0.074 | 0.700 | 0.888 |
Clarity™ 18, Stahl 14 | 5 | 0.735 | 0.640 | 0.236 | 0.313 | 0.888 |
Clarity™ 18, Stahl 16 | 5 | 0.735 | 0.744 | 0.053 | 0.699 | 0.834 |
Clarity™ 18, Stahl 16 × 22 | 5 | 0.938 | 0.815 | 0.263 | 0.362 | 1.004 |
Clarity™ 22, β‑Ti 16 | 5 | 1.534 | 1.737 | 0.529 | 1.168 | 2.563 |
Clarity™ 22, β‑Ti 16 × 22 | 5 | 1.413 | 1.369 | 0.066 | 1.289 | 1.421 |
Clarity™ 22, β‑Ti 19 × 25 | 5 | 1.483 | 1.398 | 0.194 | 1.067 | 1.559 |
Clarity™ 22, CoCr 14 | 5 | 0.871 | 0.857 | 0.044 | 0.800 | 0.903 |
Clarity™ 22, CoCr 16 | 5 | 0.784 | 0.782 | 0.093 | 0.646 | 0.886 |
Clarity™ 22, CoCr 16 × 22 | 5 | 0.853 | 0.783 | 0.223 | 0.490 | 1.011 |
Clarity™ 22, CoCr 19 × 25 | 5 | 0.822 | 0.771 | 0.186 | 0.451 | 0.938 |
Clarity™ 22, Gummetal® 14 | 5 | 0.679 | 0.586 | 0.206 | 0.246 | 0.768 |
Clarity™ 22, Gummetal® 16 | 5 | 0.819 | 0.787 | 0.098 | 0.675 | 0.880 |
Clarity™ 22, Gummetal® 16 × 22 | 5 | 0.937 | 0.866 | 0.182 | 0.560 | 1.005 |
Clarity™ 22, Gummetal® 19 × 25 | 5 | 0.896 | 0.851 | 0.098 | 0.677 | 0.907 |
Clarity™ 22, NiTi 14 | 5 | 0.842 | 0.884 | 0.100 | 0.786 | 1.039 |
Clarity™ 22, NiTi 16 | 5 | 0.915 | 0.906 | 0.137 | 0.761 | 1.092 |
Clarity™ 22, NiTi 16 × 22 | 5 | 0.814 | 0.729 | 0.213 | 0.349 | 0.852 |
Clarity™ 22, NiTi 19 × 25 | 5 | 1.225 | 1.206 | 0.091 | 1.052 | 1.286 |
Clarity™ 22, Stahl 14 | 5 | 0.817 | 0.829 | 0.118 | 0.725 | 1.028 |
Clarity™ 22, Stahl 16 | 5 | 0.767 | 0.793 | 0.075 | 0.739 | 0.921 |
Clarity™ 22, Stahl 16 × 22 | 5 | 0.773 | 0.748 | 0.049 | 0.671 | 0.784 |
Clarity™ 22, Stahl 19 × 25 | 5 | 0.701 | 0.631 | 0.163 | 0.378 | 0.764 |
Discovery® | ||||||
Discovery® 18, β‑Ti 16 | 5 | 1.911 | 1.988 | 0.248 | 1.780 | 2.412 |
Discovery® 18, β‑Ti 16 × 22 | 5 | 1.582 | 1.593 | 0.126 | 1.448 | 1.778 |
Discovery® 18, CoCr 14 | 5 | 0.896 | 0.794 | 0.267 | 0.478 | 1.088 |
Discovery® 18, CoCr 16 | 5 | 0.786 | 0.824 | 0.233 | 0.533 | 1.170 |
Discovery® 18, CoCr 16 × 22 | 5 | 0.952 | 1.059 | 0.447 | 0.688 | 1.831 |
Discovery® 18, Gummetal® 14 | 5 | 0.614 | 0.576 | 0.161 | 0.318 | 0.759 |
Discovery® 18, Gummetal® 16 | 5 | 0.690 | 0.673 | 0.095 | 0.511 | 0.755 |
Discovery® 18, Gummetal® 16 × 22 | 5 | 1.009 | 0.986 | 0.191 | 0.694 | 1.227 |
Discovery® 18, NiTi 14 | 5 | 0.867 | 0.910 | 0.082 | 0.841 | 1.012 |
Discovery® 18, NiTi 16 | 5 | 1.118 | 1.126 | 0.319 | 0.699 | 1.528 |
Discovery® 18, NiTi 16 × 22 | 5 | 0.920 | 0.908 | 0.112 | 0.737 | 1.039 |
Discovery® 18, Steel 14 | 5 | 0.540 | 0.565 | 0.070 | 0.522 | 0.690 |
Discovery® 18, Steel 16 | 5 | 0.505 | 0.506 | 0.172 | 0.313 | 0.741 |
Discovery® 18, Steel 16 × 22 | 5 | 0.545 | 0.561 | 0.113 | 0.452 | 0.735 |
Discovery® 22, β‑Ti 16 | 5 | 1.970 | 1.999 | 0.096 | 1.920 | 2.157 |
Discovery® 22, β‑Ti 16 × 22 | 5 | 1.308 | 1.344 | 0.091 | 1.253 | 1.492 |
Discovery® 22, β‑Ti 19 × 25 | 5 | 1.375 | 1.435 | 0.218 | 1.150 | 1.692 |
Discovery® 22, CoCr 14 | 5 | 0.830 | 0.734 | 0.174 | 0.491 | 0.896 |
Discovery® 22, CoCr 16 | 5 | 0.744 | 0.797 | 0.113 | 0.721 | 0.988 |
Discovery® 22, CoCr 16 × 22 | 5 | 0.745 | 0.696 | 0.182 | 0.378 | 0.830 |
Discovery® 22, CoCr 19 × 25 | 5 | 0.836 | 0.729 | 0.185 | 0.428 | 0.867 |
Discovery® 22, Gummetal® 14 | 5 | 0.366 | 0.429 | 0.164 | 0.271 | 0.699 |
Discovery® 22, Gummetal® 16 | 5 | 0.710 | 0.689 | 0.085 | 0.588 | 0.789 |
Discovery® 22, Gummetal® 16 × 22 | 5 | 0.903 | 0.862 | 0.111 | 0.666 | 0.938 |
Discovery® 22, Gummetal® 19 × 25 | 5 | 0.849 | 0.835 | 0.049 | 0.783 | 0.895 |
Discovery® 22, NiTi 14 | 5 | 0.761 | 0.736 | 0.129 | 0.525 | 0.871 |
Discovery® 22, NiTi 16 | 5 | 0.912 | 0.915 | 0.094 | 0.802 | 1.055 |
Discovery® 22, NiTi 16 × 22 | 5 | 0.919 | 0.905 | 0.052 | 0.825 | 0.960 |
Discovery® 22, NiTi 19 × 25 | 5 | 1.251 | 1.249 | 0.115 | 1.094 | 1.400 |
Discovery® 22, Steel 14 | 5 | 0.687 | 0.670 | 0.050 | 0.611 | 0.736 |
Discovery® 22, Steel 16 | 5 | 0.660 | 0.661 | 0.018 | 0.643 | 0.684 |
Discovery® 22, Steel 16 × 22 | 5 | 0.738 | 0.715 | 0.116 | 0.524 | 0.833 |
Discovery® 22, Steel 19 × 25 | 5 | 0.743 | 0.769 | 0.038 | 0.741 | 0.811 |
Inspire Ice™ | ||||||
Inspire Ice™ 18, β‑Ti 16 | 5 | 2.399 | 2.380 | 0.292 | 1.953 | 2.708 |
Inspire Ice™ 18, β‑Ti 16 × 22 | 5 | 1.553 | 1.613 | 0.204 | 1.365 | 1.849 |
Inspire Ice™ 18, CoCr 14 | 5 | 1.546 | 1.504 | 0.452 | 0.752 | 1.924 |
Inspire Ice™ 18, CoCr 16 | 5 | 1.425 | 1.335 | 0.334 | 0.897 | 1.766 |
Inspire Ice™ 18, CoCr 16 × 22 | 5 | 1.188 | 1.211 | 0.153 | 1.028 | 1.407 |
Inspire Ice™ 18, Gummetal® 14 | 5 | 1.836 | 1.859 | 0.293 | 1.428 | 2.156 |
Inspire Ice™ 18, Gummetal® 16 | 5 | 1.945 | 1.860 | 0.407 | 1.349 | 2.329 |
Inspire Ice™ 18, Gummetal® 16 × 22 | 5 | 1.445 | 1.502 | 0.255 | 1.191 | 1.864 |
Inspire Ice™ 18, NiTi 14 | 5 | 1.100 | 1.101 | 0.221 | 0.786 | 1.389 |
Inspire Ice™ 18, NiTi 16 | 5 | 1.138 | 1.023 | 0.297 | 0.554 | 1.312 |
Inspire Ice™ 18, NiTi 16 × 22 | 5 | 0.948 | 0.907 | 0.092 | 0.767 | 0.995 |
Inspire Ice™ 18, Steel 14 | 5 | 1.478 | 1.556 | 0.223 | 1.283 | 1.818 |
Inspire Ice™ 18, Steel 16 | 5 | 1.383 | 1.637 | 0.617 | 1.046 | 2.535 |
Inspire Ice™ 18, Steel 16 × 22 | 5 | 1.126 | 1.061 | 0.139 | 0.828 | 1.157 |
Inspire Ice™ 22, β‑Ti 16 | 5 | 2.152 | 2.138 | 0.148 | 1.918 | 2.326 |
Inspire Ice™ 22, β‑Ti 16 × 22 | 5 | 1.337 | 1.254 | 0.325 | 0.700 | 1.558 |
Inspire Ice™ 22, β‑Ti 19 × 25 | 5 | 1.736 | 1.698 | 0.185 | 1.458 | 1.932 |
Inspire Ice™ 22, CoCr 14 | 5 | 1.519 | 1.424 | 0.158 | 1.203 | 1.549 |
Inspire Ice™ 22, CoCr 16 | 5 | 1.197 | 1.270 | 0.132 | 1.162 | 1.433 |
Inspire Ice™ 22, CoCr 16 × 22 | 5 | 1.611 | 1.516 | 0.363 | 0.918 | 1.884 |
Inspire Ice™ 22, CoCr 19 × 25 | 5 | 1.358 | 1.164 | 0.421 | 0.650 | 1.646 |
Inspire Ice™ 22, Gummetal® 14 | 5 | 1.642 | 1.634 | 0.181 | 1.429 | 1.850 |
Inspire Ice™ 22, Gummetal® 16 | 5 | 1.326 | 1.427 | 0.216 | 1.255 | 1.790 |
Inspire Ice™ 22, Gummetal® 16 × 22 | 5 | 1.823 | 1.587 | 0.364 | 1.120 | 1.894 |
Inspire Ice™ 22, Gummetal® 19 × 25 | 5 | 1.370 | 1.405 | 0.201 | 1.182 | 1.703 |
Inspire Ice™ 22, NiTi 14 | 5 | 0.988 | 0.956 | 0.169 | 0.707 | 1.162 |
Inspire Ice™ 22, NiTi 16 | 5 | 1.167 | 1.113 | 0.238 | 0.775 | 1.426 |
Inspire Ice™ 22, NiTi 16 × 22 | 5 | 1.130 | 1.119 | 0.116 | 0.959 | 1.278 |
Inspire Ice™ 22, NiTi 19 × 25 | 5 | 1.180 | 1.073 | 0.228 | 0.701 | 1.264 |
Inspire Ice™ 22, Steel 14 | 5 | 1.371 | 1.457 | 0.417 | 0.952 | 2.055 |
Inspire Ice™ 22, Steel 16 | 5 | 1.773 | 1.764 | 0.600 | 1.143 | 2.593 |
Inspire Ice™ 22, Steel 16 × 22 | 5 | 1.428 | 1.621 | 0.643 | 0.926 | 2.632 |
Inspire Ice™ 22, Steel 19 × 25 | 5 | 1.376 | 1.555 | 0.604 | 0.809 | 2.242 |
Micro Sprint® | ||||||
Micro Sprint® 18, β‑Ti 16 | 5 | 2.005 | 2.107 | 0.240 | 1.901 | 2.459 |
Micro Sprint® 18, β‑Ti 16 × 22 | 5 | 2.193 | 2.096 | 0.356 | 1.538 | 2.415 |
Micro Sprint® 18, CoCr 14 | 5 | 1.156 | 1.129 | 0.295 | 0.663 | 1.467 |
Micro Sprint® 18, CoCr 16 | 5 | 1.154 | 1.189 | 0.155 | 1.037 | 1.397 |
Micro Sprint® 18, CoCr 16 × 22 | 5 | 1.074 | 0.892 | 0.373 | 0.405 | 1.259 |
Micro Sprint® 18, Gummetal® 14 | 5 | 1.091 | 1.002 | 0.271 | 0.574 | 1.288 |
Micro Sprint® 18, Gummetal® 16 | 5 | 0.744 | 0.627 | 0.201 | 0.407 | 0.811 |
Micro Sprint® 18, Gummetal® 16 × 22 | 5 | 1.119 | 1.074 | 0.132 | 0.840 | 1.166 |
Micro Sprint® 18, NiTi 14 | 5 | 1.454 | 1.485 | 0.180 | 1.246 | 1.666 |
Micro Sprint® 18, NiTi 16 | 5 | 1.369 | 1.356 | 0.084 | 1.250 | 1.472 |
Micro Sprint® 18, NiTi 16 × 22 | 5 | 1.266 | 1.315 | 0.284 | 1.079 | 1.771 |
Micro Sprint® 18, Steel 14 | 5 | 1.215 | 1.182 | 0.233 | 0.823 | 1.471 |
Micro Sprint® 18, Steel 16 | 5 | 1.245 | 1.259 | 0.106 | 1.141 | 1.430 |
Micro Sprint® 18, Steel 16 × 22 | 5 | 1.183 | 1.156 | 0.146 | 0.994 | 1.299 |
Micro Sprint® 22, β‑Ti 16 | 5 | 2.441 | 2.401 | 0.438 | 1.820 | 2.991 |
Micro Sprint® 22, β‑Ti 16 × 22 | 5 | 1.838 | 1.836 | 0.185 | 1.588 | 2.088 |
Micro Sprint® 22, β‑Ti 19 × 25 | 5 | 1.888 | 1.913 | 0.251 | 1.643 | 2.275 |
Micro Sprint® 22, CoCr 14 | 5 | 1.320 | 1.230 | 0.228 | 0.851 | 1.437 |
Micro Sprint® 22, CoCr 16 | 5 | 1.362 | 1.364 | 0.125 | 1.233 | 1.505 |
Micro Sprint® 22, CoCr 16 × 22 | 5 | 1.008 | 0.909 | 0.269 | 0.474 | 1.185 |
Micro Sprint® 22, CoCr 19 × 25 | 5 | 1.160 | 1.154 | 0.086 | 1.054 | 1.285 |
Micro Sprint® 22, Gummetal® 14 | 5 | 0.400 | 0.486 | 0.330 | 0.176 | 0.925 |
Micro Sprint® 22, Gummetal® 16 | 5 | 0.911 | 0.859 | 0.202 | 0.508 | 1.000 |
Micro Sprint® 22, Gummetal® 16 × 22 | 5 | 1.103 | 1.205 | 0.226 | 1.084 | 1.609 |
Micro Sprint® 22, Gummetal® 19 × 25 | 5 | 0.999 | 0.996 | 0.024 | 0.957 | 1.016 |
Micro Sprint® 22, NiTi 14 | 5 | 1.185 | 1.145 | 0.189 | 0.935 | 1.396 |
Micro Sprint® 22, NiTi 16 | 5 | 1.302 | 1.247 | 0.158 | 1.082 | 1.443 |
Micro Sprint® 22, NiTi 16 × 22 | 5 | 1.268 | 1.306 | 0.094 | 1.216 | 1.425 |
Micro Sprint® 22, NiTi 19 × 25 | 5 | 1.746 | 1.699 | 0.142 | 1.456 | 1.820 |
Micro Sprint® 22, Steel 14 | 5 | 1.229 | 1.211 | 0.105 | 1.072 | 1.338 |
Micro Sprint® 22, Steel 16 | 5 | 1.289 | 1.243 | 0.089 | 1.132 | 1.333 |
Micro Sprint® 22, Steel 16 × 22 | 5 | 1.119 | 1.087 | 0.165 | 0.912 | 1.274 |
Micro Sprint® 22, Steel 19 × 25 | 5 | 1.277 | 1.255 | 0.164 | 1.001 | 1.450 |
Statistical analysis
Results
Bracket Gummetal® | NiTi | β‑Ti | Stainlesss steel | CoCr |
---|---|---|---|---|
Clarity™ 18 Dim. 14 | *(< 0.0125) | n. s. (0.841) | n. s. (0.151) | |
Clarity™ 18 Dim. 16 | n. s. (0.056) | * (< 0.0125) | n. s. (0.69) | n. s. (1.00) |
Clarity™ 18 Dim. 16 × 22 | n. s. (0.032) | * (< 0.0125) | n. s. (0.09) | n. s. (0.095) |
Clarity™ 22 Dim. 14 | *(< 0.0125) | n. s. (0.032) | *(< 0.0125) | |
Clarity™ 22 Dim. 16 | n. s. (0.222) | * (< 0.0125) | n. s. (1.00) | n. s. (1.00) |
Clarity™ 22 Dim. 16 × 22 | n. s. (0.151) | * (< 0.0125) | n. s. (0.151) | n. s. (0.841) |
Clarity™ 22 Dim. 19 × 25 | *(< 0.0125) | * (< 0.0125) | n. s. (0.056) | n. s. (0.421) |
Discovery® 18 Dim. 14 | *(< 0.0125) | n. s. (0.421) | n. s. (0.421) | |
Discovery® 18 Dim. 16 | n. s. (0.032) | * (< 0.0125) | n. s. (0.151) | n. s. (0.151) |
Discovery® 18 Dim. 16 × 22 | n. s. (0.421) | *(< 0.0125) | n. s. (0.016) | n. s. (0.548) |
Discovery® 22 Dim. 14 | n. s. (0.016) | n. s. (0.095) | n. s. (0.032) | |
Discovery® 22 Dim. 16 | *(< 0.0125) | *(< 0.0125) | n. s. (0.69) | n. s. (0.222) |
Discovery® 22 Dim. 16 × 22 | n. s. (0.69) | *(< 0.0125) | n. s. (0.095) | n. s. (0.095) |
Discovery® 22 Dim. 19 × 25 | *(< 0.0125) | *(< 0.0125) | n. s. (0.095) | n. s. (0.421) |
Inspire Ice™ 18 Dim. 14 | *(< 0.0125) | n. s. (0.151) | n. s. (0.31) | |
Inspire Ice™ 18 Dim. 16 | *(< 0.0125) | n. s. (0.056) | n. s. (0.548) | n. s. (0.095) |
Inspire Ice™ 18 Dim. 16 × 22 | *(< 0.0125) | n. s. (0.69) | *(< 0.0125) | n. s. (0.056) |
Inspire Ice™ 22 Dim. 14 | *(< 0.0125) | n. s. (0.421) | n. s. (0.222) | |
Inspire Ice™ 22 Dim. 16 | n. s. (0.056) | *(< 0.0125) | n. s. (0.841) | n. s. (0.222) |
Inspire Ice™ 22 Dim. 16 × 22 | n. s. (0.095) | n. s. (0.421) | n. s. (0.841) | n. s. (0.69) |
Inspire Ice™ 22 Dim. 19 × 25 | n. s. (0.032) | n. s. (0.056) | n. s. (0.841) | n. s. (0.421) |
Micro Sprint® 18 Dim. 14 | n. s. (0.016) | n. s. (0.31) | n. s. (0.421) | |
Micro Sprint® 18 Dim. 16 | *(< 0.0125) | *(< 0.0125) | *(< 0.0125) | *(< 0.0125) |
Micro Sprint® 18 Dim. 16 × 22 | n. s. (0.421) | *(< 0.0125) | n. s. (0.421) | n. s. (0.69) |
Micro Sprint® 22 Dim. 14 | *(< 0.0125) | *(< 0.0125) | n. s. (0.016) | |
Micro Sprint® 22 Dim. 16 | *(< 0.0125) | *(< 0.0125) | *(< 0.0125) | *(< 0.0125) |
Micro Sprint® 22 Dim. 16 × 22 | n. s. (0.151) | n. s. (0.016) | n. s. (0.841) | n. s. (0.095) |
Micro Sprint® 22 Dim. 19 × 25 | *(< 0.0125) | *(< 0.0125) | n. s. (0.032) | *(< 0.0125) |